package com.lu.mapper;

import com.lu.pojo.Department;
import org.springframework.stereotype.Repository;

import java.util.Collection;
import java.util.HashMap;
import java.util.Map;

/**
 * Created by LWC
 * Date 2021/6/29 19:48
 * Description
 */
@Repository
public class DepartmentDao {

    //模拟数据库的数据
    private static Map<Integer, Department> departments = null;
    static {
        departments =new HashMap<Integer,Department>();//创建一个表
        departments.put(101,new Department(101,"教学部"));
        departments.put(102,new Department(101,"市场部"));
        departments.put(103,new Department(101,"教研部"));
        departments.put(104,new Department(101,"运营部"));
        departments.put(105,new Department(101,"后勤部"));

    }

    //获得所有部门信息
    public Collection<Department> getDepartments(){
        return  departments.values();
    }
    //通过id得到部门
    public Department getDepartmentById(Integer id){
        return departments.get(id);
    }
}
